A.18.11 The Package Containers.Indefinite_Doubly_Linked_Lists

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The language-defined generic package Containers.Indefinite_Doubly_Linked_Lists
provides private types List and Cursor, and a set of operations for each
type. It provides the same operations as the package Containers.Doubly_Linked_Lists
(see A.18.3), with the difference that the
generic formal Element_Type is indefinite.

Static Semantics

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The declaration of
the generic library package Containers.Indefinite_Doubly_Linked_Lists
has the same contents as Containers.Doubly_Linked_Lists except:

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The generic formal Element_Type is
indefinite.

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The
procedure with the profile:

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procedure Insert (Container : in out List;
Before : in Cursor;
Position : out Cursor;
Count : in Count_Type := 1);

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is omitted.

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The actual Element parameter of access
subprogram Process of Update_Element may be constrained even if Element_Type
is unconstrained.